Both are great, you could get either and wouldn't be dissatisfied.
Just a tip, if your going to install a triple radiator in the top of the HAF-X, you cant use the top 5.25" bay (or you have to get something short like my fan controller to go there).
Wouldn't worry about cable management on the HAF-X, thing has plenty of room back there. 7 HDD's, 6 channel fan controller (Hooked up to 10 fans
), LED's and the usual cables all fit back there just fine, if not very pretty looking.